How to Choose the Right Bug Repellent

You're at your cabin throwing some things into a backpack for a day hike: water bottle, trail mix, sunscreen, trail map, GPS unit and insect repellent. But what kind of bug blocker?

Some people have very strong opinions about their choice of insect repellent. There are some hardcore outdoors types in my friendship circle and family, including five Eagle Scouts. From some of them, I've heard the comment, "Only Jungle Juice [a product with 100% DEET] for me; why fool around?!"

On the other hand, I have relatives and friends who are averse to chemicals like DEET because they have sensitive noses and/or harbor concerns about the safety of chemicals.

But all this is okay. One type does not fit all. How do you decide which one is right for you?